How many rows are returned by the following query? SELECT DID FROM DriverMINUSSELECT DID FROM RideDetail;

What DID values are retured by the following query? SELECT DIDFROM DriverWHERE phone LIKE ‘_0%’;

Considering the provided database, after executing the following update statement: UPDATE RideDetail xSET tip = price * 0.1WHERE price > 15; What RID value(s) would be returned by the following query: SELECT RIDFROM Rider rWHERE NOT EXISTS (SELECT * FROM RideDetail x WHERE x.RID = r.RID AND TIP > 4);

Which values are returned from the following nested SQL query? SELECT Dname FROM Driver WHERE DID IN (SELECT DID FROM RideDetail WHERE RID IN (SELECT RID FROM Rider WHERE MemberSince > 2017-01));

How many rows are returned by the following query? SELECT Region FROM DriverUNIONSELECT RnameFROM Rider;

Which query returns the RID of all Riders who have never taken a ride?

How many superkeys are possible for the RideDetail relation? 

Which of the following relational algebra queries returns a single tuple with a value of 25?

How many rows are returned by the following query? SELECT DISTINCT r.RID, d.DID FROM Rider r, Driver d;

Which of the following explanation is correct about genome replication (not transcription) in the influenza virus?